Door lock



R. H. WISE Aug.A 26, 1952 DOOR LOCK '7 Sheets-Sheell l Filed May 15, 1947 IE. 'ln QTTURNEYS Filed May l5, 1947 'T Sheets-Sheet 2 y 43 A 45 INVENTOR.

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Y BY Y |r\\ l l l 14T TOKNE YF R. H. WISE I Aug." 26, 1952 DOOR LOCK '7 Sheets-Sheet 5 Filed May l5, 1947 ATTORNEYS Aug. 26, 1952 R. H. wlsE 2,608,429

DOOR LOCK Filed May 15, 1947 7 Sheets-Sheet 6 INVENTo. /Pa/,o/z H. M//se A 1' TORNEYS Aug 26, 1952 R. H. MSE 2,608,429

DOOR Loox Filed May 15e 1947 v 7 sheen-sheet 7 FII-:m15

ATRNE'YS Patented Aug. 26, 1952 DOOR LOCK Ralph H. Wise, Detroit, Mich., assigner to General Motors Corporation, Detroit, Mich., a corporation of Delaware Application May 15, 1947, Serial No. 748,183

This invention relates to a door lock and ticularly a lock for an automobile door.

It is an object of this invention to produce a lock which will lend itself to operation with a minimum of effort, that is, a lock which will permit the vehicle door to close easily and quietly but will securely and safely retain the door in locked or latched condition while closed,and be exceptionally theft-proof because of its design and method of installation.

My invention also contemplates a lock in which the latch bolt can be retracted with a minimum of effort preparatory to opening the door.

In the drawings:

Fig. 1 is a side elevation showing my lock mounted on the door and body lock pillars of an automobile body.

Fig. 2 is an elevation partly in section along the line 2 2 of Fig. 1 showing the lock as viewed from outside the vehicle body when the door is closed. i i

Fig. 3 is a section along the line 3 3 of Fig. 2.

Fig. 4 is a section along the line 4 4 of Fig. 3.

Fig. 5 is a view similar to that of Fig. 3 but showing the inside and outside rollbacks disconnected from the bolt. 1

Figs. 6 and 7 are sections along the lines 6 6 and 1 1 of Fig. 5.

Fig. 8 is a detail of the toggle latch bolt.

Fig. 9 is a section along the line 9 9 of Fig. 8.

Fig. 10 is a detail of the toggle latch bolt showing the position of the toggle bolt as it rides over the striker plate during the closing of the door.

Fig. 11 is a detail of the toggle bolt in retracted position.

Figs. l2 and 13 are details of the two members which make up the toggle bolt.

Fig. 14 is a detail showing the togglebolt camming the cam back to unlocked position during the closing of the door.

Fig. 15 is a detail of the cam.

Fig. 16 is a, detail of the guide for the latch cam.

Referring more particularly to the drawings, it will be seen that my lock is of the type wherein the lock and dovetail are combined. Thus. the striker casing I, which is secured to the door pillar 2, comprises the male member of the dovetail, andthe lock keeper plate 3, which is secured to the body lock pillar 4, comprises the lower member of the dovetail or door registering device. and wedge plate 5 constitutes the upper member of the dovetail socket. Keeper plate-3 and wedge plate 5 are secured to plate 6 which is in turn secured bybolts 1 to body pillar 4. l

Referring to Fig. 8. it will be seen that the latch bolt generally designated 9 is in the form of toggle arms comprising members I0 and II which are pivoted to each other by pin l2 and 7 claims. (o1. 292-222) parto the lock frame or case I by post I3. Spring I4 is anchored as at I5 to member I0 and at I6 to member II. This spring I4 tends to maintain bolt 9 inmade or straightened position. Thus,

bolt Band spring I4 swing as a unit about post I3. Leaf spring .I1 is anchored at I8 to lock case I, presses against bolt member II, and projects bolt 9 through opening 20 in lock case I into interengagement with the safety step 2| or iinal step 22 of lock striker 3. By comparing Figs. 8 and 11, it will be seen that bolt 9 can break at the knee only when toggle member II rotates counterclockwise about pin I2 relative to member I0.

The mechanism for operating latch bolt 9 will now be described. It will be noted from Figs. 8 and 6 how latch bolt 9 is mounted. The dovetail striker or male member I is provided with a partition plate 23 which, in effect divides the case I into one compartment in which bolt 9 is mounted and another compartment in which the mechanism for operating latch bolt 9 is mounted. Post I3, upon which bolt 9 is pivoted, is anchored at its opposite ends in striker case I and in plate 23 as at 24, Fig. 6. Plate or partition 23 is secured within case I and is provided with a cut-out portion 25 through which pin I2 projects, Fig. 5.

'Ihe mechanism for operating the toggle bolt comprises a cam 26 which is slidably mounted in'a guide 21, Figs. 14-16, which is pivotally mounted on post 28. The lower end 29 of post 28 is xed in plate 23 and the upper end 30 is fixed in cover plate 3| for casing I, Fig. 5. Cam 26 is provided with an elongated slot 32 to permit relative sliding movement between post 28 and cam 26. Side walls 33 and 34 of guide 21 have a sliding contact with the side edges 35 and 36, respectively, of cam 26 for guiding the same. Spring 31 has one end 38 anchored on post 28 and the other end 39 anchored on post 40 which is fixed on cam 26. Cam 26 is provided with an arcuate flange 4I which is arranged to be contacted by the inside rollback 42 and the outside rollback 43 pivoted, respectively, at 44 and 45 between the lock cover plate 3I and partition 23, Fig. 4. Rollback 42 is adapted for `operation by a handle (not shown) positioned within the vehi-Y cle body and rollback 43 is arranged for operation by a door handle (not shown) positioned outside the vehicle body. Spring 31 tends to keep anchor post 40 in contact with post 28.. In other words, spring 31 tends at all times to project cam 26.

Guide 21 is adapted to be pivoted about post 28 in either lockedfor unlocked position. An over-center spring 46 has one end anchored to guide 21 as at 48 and the other end anchored to plate 23 as at 49. Cam 26 is provided with a hook 56 which is arranged to engage .the upper end of pin I2 for retracting toggle bolt 9. This 2,608,429 Y H I ,Y

retraction is effected by breaking toggle bolt 9 at its knee I2, see Fig. 11. Cam plate 26 has a cam surface 5I arrangedto,co-actr with pin I2 at certain times lwhen'the latch bolt 9 rides over the striker for reconnecting cam hook 5i) with pin I2. Operation-When the door is closed, toggle bolt 9 will be interengaged with nal catch 22 of striker 3, Fig. 8. Toggle bolt 9 has its pin I2 at this time slightly over-center so Ythat theV door cannot be opened unless toggle 9 is broken at the knee. Spring Ill maintains toggle bolt 9 in made or straightened condition and spring I'I holds bolt 9 projected. To retract the bolt either the inside rollback e2 can be rotated clockwse'or the outside rollback 43 can be rotated counterclockwise, Fig. 3. When either rollback4 42 orfS; is rotated the free end of. the rollback willengage arcuate iiange 4IY on cam 26,-Fig. 3, and slide cam 'itin guide 2'Ifto the dotted line position. Elongated` slot (i2-,in cam 25' permits relative,move. ment between-camv 2E andpost 28..Y v`This retrac-Y tion of cam 25 by either of the rollbacks will only retract the bolt provided the lock is in unlocked condition, that is, provided guide plate 21 has been swung to the position shown in Figs. 3 and 14 so that hook 59, upon retraction of cam 2", will pick up or engage post l2 to thereby break the toggle at the knee and retract the bolt from interengagernent with striker 3, Fig. 11. klThis permits the docrto be swung open. Y

If. the guide plate has beenpivoted counterclockwise from the position shown in Fig. 14 to that shown in the full lines Fig. 5, then if either rollback is actuated to retract cram 2, hook 5i) will simply ride freely by post 12 will not interengage the same and consequently both the inside and outside rollbacks or door handles are ineffective to retract the latch bolt and the door or' lock will be in locked condition. l

To reconnect the rollbacks with the latch bolts it will be necessary to shift guide plate 2'I from the full line position to the dotted line position, Fig. 5, about post 28. Spring i5 willV hold guide plate 21 in either locked or unlocked position.

My lockv is arranged sov that the operator will not unconsciously lock himself out oi his automobile. I, while the automobile door is open, guide 21 is shifted to the full line position shown in Fig. 5 so that the latch is locked, that is, the inner and outer rollbacks or door handles are ineffective to retract the bolt, then upon closing the door, latch bolt 9 will be swung clockwise, Fig. 10, Vas it rides over the striker plate 3. 'As

. bolt 9 is swung'clockwise about Ypost i3 bythe striker plate during closingo'f` the door, pinA I2 will ride along cam surface 5i onca'ln 26l and thereby rotate cam' and guide 2l from' the'iull line to the dotted line position shown in Fig; 5. The camming action is illustratedin 14. Thus, closing of the door will automatically reset cam plate '2S so Vthat the hooky 555 will engage pin I2 and the rollbacksV will againbe effective' to` retract bolt El. v

Ii, while the door open, thelock parts are in the position shown in Fig. 5, full lines, so that he rollbacks lare ineiiiective toretract the bolt, and it is desired to maintain the' lock in lthis locked condition upon closing the door," this can be accomplished by swinging .theoutside door handle, that is, the outside rollback to bolt retraoting position which willi'retract slide 26 andcarn surface 5I toward post 2t so that cam surface 5I will be out-of the range ci travel of pin I2 as the bolt 5 yis pivoted while, riding over the striker plate :during closing off the' door; After the door is closedthe outside rollback can be released and the retractor or cam 26 will return to the full line position, Fig. 5, where it is inee'ctivetoretract the boltQ 'Ihu's,'.Y while the door is'ope'n, they lock can be set in'locke'd condition and maintained so during the closing of the door and, in eiect, the door can be locked without a key.

Guide plate El, of course, will be arranged to be operated by a lever on the inside of the door or byva conventional push button extending up through the garnish molding. Such an arrangement is shown in the Andersen-Bowlus Patent No. 2,039,873.

In Fig. 8 the center line of the toggle bolt 9 is referenced C-C'. It will be noted that the center of pin i2 is slightly toV the Yright ofbut substantially on the, center line C``Cl and that stop 5U on toggle member II is against stop 6I on togglemember ii). When the door is' latched, as shown in Fig. 8, the reaction between bolt II and .keeper 3 is tending to `turn bolt E! counterclockwise about pin I3 and is tending tok rotate toggle member I I clockwise about pin I2 because pin l2 is to the right of center. Thus, it will be seen that bolt 9 cannot be retracted except by swinging pin l2 to the left of center C-C`,'which is the functionof ,cam hookor retractor 55.

1. A lock comprising Ya lock frame, agtoggle bolt pivoted' adjacent one end upon the lock frame and having its other end adapted to project beyond the lock frame and adapted to interengage a keeper, resilient means acting between Vthe members comprising said toggle bolt tofhold the same in longitudinal alignment, the said toggle bolt and resilient means being swingable as a unit about its pivotal support upon the lock frame while the. toggle members are maintained in: longitudinal alignment, a `.reilractor cam adapted to engage lthe toggle bolt at theknee and to break the toggle at the knee and retract the freeend of the toggle bolt inwardly of the lock frame whereby the toggleb'olt. is disengaged fromr its keeper, and a rollback adapted to engage-and operate said: cam.. Y L

2. In a lock, a casing, .a platemountedvin said casing and dividing the saine into two compartments, a two arrnV toggle bolt positioned in the one compartment and .pivoted adjacent one end to said casing, the other endof they toggle bolt projecting without Vthe casing andadapted to interengage a keeperwhen the.,.toggle bolt is projected, a pivotal connection between the't'wo members of the toggle bolt andV positioned substantially at the lcngitudinal'center of the toggle bolt when straightened, rneans at theknee of saidtoggle bolt projecting into the other oompartment, and a retractor positioned in the other compartment adapted to engage the said means and break the toggle bolt at the knee to disengagethe toggle `bolt from its keeper.

3. lThe combination as setv forth Vin claim 2 wherein the toggle bolt swings las, a unit with the toggle bolt members in longitudinalalignment as the bolt rides over the striker and the retractor is slidable transversely of the toggle bolt., 1 I

1i. The combination as set forth in claim y3 including guide :member vpivotally Vmounted on said plate, the said retractor being slidably mounted in sadguide plate, theY guide member being pivotable to one position where the retractor is ,effective Vto break the toggle bolt at the knee and' to another position .where the retractor is ineffective upon Vretraction to break the toggle at the knee. i f

5. In a lock. a casing. a two arm toggle bolt pivoted at one end to said casing, the other end of the toggle projecting without the casing and adapted to interengage a keeper when the toggle is straightened, a, guide plate pivotally mounted on the lock casing to swing about a different center than that of the toggle bolt, a retraetor slidably mounted in said guide plate, the said guide plate being shiftable to locked and unlocked positions, the said guide plate when in locked position locating the retractor in a position where it is ineffective to break the toggle bolt at the knee, the said guide plate when in unlocked position bringing the retractor into a position where it is effective upon retraction to break the 15 toggle bolt at the knee.

6. The combination as set forth in claim 5 wherein the retractor member has a cam surface and the toggle bolt is provided with a pin for contacting said cam surface whereby when the guide plate is in locked position swinging of the latch bolt about its pivot will cause said means on the latch bolt to ride along the cam surface and shift said guide plate and retractor to unlocked position.

7. The combination as set forth in claim 6 wherein the retractor is shiitable on its guide plate to a position where the cam surface is outside the range of the pin on the toggle bolt so that swinging of the toggle bolt aboutitspivot will be ineffective to shift the guide plate vfrom locked to unlocked position.

RALPH H.

REFERENCES CITED The following references are of recordgin the lle of this patent:

UNITED STATES PATENTS Number Name e 567,621 Smith Sept.15y,"1896 1,007,398 Snider Oca-31, 1911 1,769,489 Carrier July 1, 1930 1,807,113 Winans May1r26. 1931 2,039,048 Agterberg Apr. 28, 1936 o 2,195,542 Shaffer et al Apr. 2, 1940 0 2,228,570 Johnson 11.14, 1941 2,259,670 Van Voorhees Oct. 21, 1941 2,301,559 Marple Nov. 10, 1942 FOREIGN PATENTS 25 Number Country Date 482,889 Great Britain Apr. 4. 1938 

